Sodalite and Apatite Physical Properties

Sodalite

Apatite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.15-2.403.16-3.23

1 7.18

1.5 Fracture

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

1.6 Cleavage

Poor on {110}

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

5-65

2 10

1.8 Chemical Composition

Na₈Al₆Si₆O₂₄Cl₂

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Sodalite and Apatite Chemical Formula

While comparing Sodalite and Apatite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Sodalite and Apatite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

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Sodalite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.